Pak Chega was a famous Silhak scholar in the late Joseon Dynasty.

Pak Chega developed the way of agriculture, and he also enhanced some of the farming machinery to cultivate plants.

He called for improving the reality and proactively embracing the culture of the Qing Dynasty.

He argued for the abolition of Joseon's status system, and considered commerce and industry important.

He said, " If we actively take advantage of the natural environment of Joseon, which is surrounded by the sea on three sides, and develop it into maritime trade, the national power will become strong and the livelihood of the people will be stabilized.